Patent GB-190211688-A (GB)
Title: Improvements in and relating to Differential Jacquard Embroidering Machines.
Inventor: SAILLY VICTOR
Filed: 1902-05-22
Granted: 1903-05-22
Abstract: 11,688. Sailly, V., and Bodhuin, L. May 22. Embroidery.-Relates to jacquard mechanism for giving vertical and horizontal movement to an embroidery frame. The perforated pattern 3 passes over a feed-roller 16 carried in a pivoted frame 17, which is oscillated from eccentrics by links and levers 18. The roller 16 is actuated by toothed gearing from a pinion which is turned by a disc 22 having pins engaging with a pawl 24 pivoted to a fixed point. A bridle 19 engages with flat faces on the disc 22, and thus sets it accurately in its proper position after each movement. The oscillation of the frame thus causes the pattern 3 to move, and also presses it against needles 1, 2, which are connected to hooks 4, 5, and in this way certain selected hooks are caused to engage with oscillating levers 10, 11, while others are not. The hooks are connected by cords 6, 7 to blocks 43, some of which are thus lifted. The lower part of the machine comprises three tiers of mechanism actuated by shafts 36, 37, and 38. The two upper tiers effect the horizontal movement of the embroidery frame 90 by a spindle 55, screw and mitre gearing, and a shaft 85 carrying rollers 89, which embrace the side of the frame, and they effect the vertical movement by a spindle 56 and other gearing. The two spindles 55, 56 are operated in similar ways. The mechanism of the two upper tiers operates alternately, and each comprises a pair of rods 39, Fig. 7, connected by a bridge or stop 41, and also a pair of rods 40 connected by a bridge 42, which carries four cases for the blocks 43. There are also in each of the two upper tiers two pairs of rods 47 carrying racks 52, each pair of which operates the spindles 55, 56 respectively, one member of each pair turning the spindle in one direction and the other member turning it in the other. The rods 47 are urged towards the right by springs 49 connected to the stops 41, and by springs 48 connected to the framing, and they also carry abutments 46 which press against the blocks 43. The result is that the rods 47, and therefore the racks 52, move under the influence of the springs through distances depending on the number of blocks interposed between the abutments 46 and the bridge 42, the bridge 42 performing such a movement as to allow the blocks to separate slightly and form new combinations readily. The rods 47 are moved back to their normal position after each actuation by the stop 41. The movements of the two, upper tiers duplicate one another, but act alternately. The clutch mechanism for moving the shafts 55, 56 is shown in Fig. 5. The racks 52 gear with wheels 53, which are connected with arms 54 carrying pawls. The pawls engage with wheels 58 on the shafts, and have pins 64 which run in slots 63 in plates 62. The slots 63 are circular for most of their length, so that, during the forward stroke of a pawl, excepting at the very commencement, it is in gear with the corresponding wheel 58. During the backward stroke, the plate 62 is moved so as to withdraw the pawl from the wheel by means of the pin 64. These movements of the plates 62 are effected by cams on shafts 60 driven from a sbaft 59. After each movement, in one direction or the other of the shafts 55, they are locked by a pin 69 which engages with a wheel 68. The embroidery frame is hung from rollers which run on rails suspended from bands which pass over pulleys 83 on a shaft 84.